LED gyroball powerful wrist ball trainer Color:blue Rows: Dual Row

Rows: Dual Row

Zodiac sign is made of a Zinc Alloy

You can also switch the shoulder by changing the side of the buckle

your best friend

LED gyroball powerful wrist ball trainer Color:blue Rows: Dual Row30LBS Strengthen Wrist Strength LED Gyro Strength Ball Improve Arm Strength Wrist Strength Trainer Relax Muscle Fitness Ball how to use: 1. Hold the wrist ball with one hand, with the opening up, and insert the head of the rope into the hole in the center of the ball with the other hand. 2. Hold the ball with your thumb, turn the ball forward, and tightly wrap the rope in the central groove in the center of the ball. 3. When the rope wraps half a